Adding-machine.



source and arranged to coact to close one of said relays when said machine is in phase with said source, and a third magnet-coil connected between unlike phases of said machine and said source and adapted and arranged to close the other relay when said machine is in phase with said source.

In witness whereof I have hereunto set my hand this 21st day of November, 1904.

JOHN D. HILLIARD, J R.

Witnesses:

J. WARD RUssELL, FLORA AUGUSTA JOHNSON.

PATENTED JUNE 13, 1905.

C. W. HORN.

ADDING MACHINE.

APPLICATION FILED JAN. 2. 1904.

5 SHEETS-SHEET 2.

PATENTED JUNE 13, 1905.

G. W. HORN.

ADDING MACHINE.

APPLICATION FILED JAN. 2. 1904.

5 SHEETS-SHEET 3.

PATENTBD JUNE 13, 1905.

C. W. HORN.

ADDING MACHINE.

urmouxox nun JAN. 2. 1904.

5 BKBBTS-BHEET 4.

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Mid-g,

PATENTED JUNE 13 C. W: HORN.

ADDING MACHINE.

APPLICATION FILED JAN. 2. 1904.

5 SHEETS-SHEET 5 I Wcimeooea: -M67ZZ0W haw/e5 Mm 7 J UNITED STATES Patented .i'une 13, 1905.

CHARLES WV. HORN, OF CHICAGO, ILLINOIS.

ADDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 792,041, dated June 13, 1905.

Application filed January 2, 1904. Serial No. 187,487.

To all whom, it may concern.-

Be it known that LCHARLES W. HORN, a citizen of the United States, and a resident of Chicago, Cook county, Illinois, haveinvonted certain new and useful Improvements in Adding- Machines; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to improvements in adding-machines, and more particularly to an addingmachine adapted to be operated by the fingers and thumb of one hand.

.Heretofore adding-machines and comptometers have usually been complicated and eX pensive in construction, and the multiplicity of parts are subject to frequent derangement, necessitating more or less expensiverepairs. So, too, in devices of the kind it is frequently possible by varying the force of the stroke upon the key to occasion a miscount or mistake in the addition.

The object of this invention is to provide a device of the class described capable of operation by means of the lingers and thumb of one hand and so constructed as to provide a positive and accurate count for each key depressed.

It is also an object of the invention to provide a cheap, simple, and durable construction of the class described.

The invention consists in the matters hereinafter described, and more fully pointed out and defined in the appended claims.

In the drawings, Figure 1 is a front elevation of a device embodying my invention. Fig. 2 is a top plan view of the same. Fig. 3 is a front elevation thereof, partly in section and slightly in perspective, showing the front cover or case removed. Fig. 4 is a similar front elevation with the countingwheels and parts of the operating mechanism removed and the key-bars in section. Fig. 5 is a view similar to Fig. 3, but illustrating a modified form of the locking mechanism for the 5 key. Fig. 6is an enlarged fragmentary sectional detail of the actuating-gear for the small counting-wheel. Fig. 7 is an enlarged detail of a part of the modified latch or lock for the large wheel. Fig. 8 is an enlarged detail of a part of the actuating means operated by the keys. Fig. 9 is a similar section taken at one side of that illustrated in Fig. 8. Fig. 10 is a section taken on line 10 10 of Fig. 8. Fig. 11 is a section taken on line 11 11 of Fig. 8. Fig. 12 is a detail view of the actuating means as shown on the right side of the machine. Fig. 13 is an enlarged detail, partly in vertical section, of the smaller counting O1 hundreds wheel and means forconnecting the same on the frame. Fig. 14 is a rear view of said wheel, showing the same detached from the frame.

As shown in said drawings, A indicates a suitable base, of wood or any desired material, upon which is secured an upper finishing or base plate a. Rigidly secured on said plate a and base A is a frame, which in the present instance consists of a sheet or plate of metal B, bent near its lower edge to afford a flange Z), adapted for attachment with the base. Said plate extends upwardly and rearwardly from said base, as shown in Figs. 3, 8, and 9. Rigidly secured on the inner side of said frame plate B by means of screw-bolts extending through its lower margin is a plate, of steel or other suitable metal, B, which is bent inwardly from the frame-plate B and extends upwardly approximately parallel therewith, affording a support for the mechanism to be carried on said frame and which in the present instance comprises a large counter-wheel C, numbered radially on its periphery from 1 to 100 and provided with peripheral ratchetteeth or serrations equal in number to the numbers upon the periphery and coinciding in position therewith. Said large counter-wheel is provided with a central elongated apertured hub c, which is milled externally to afford means for manually engaging the same. Said wheel is rotatively secured upon the inner frame-plate B by means of a screw-bolt, which passes therethrough and has threaded engagement in an apertured boss 5 on the plate B and which acts to hold said large counting-wheel in position to rotate in a given plane. Said boss spaces said counter-wheel a sufficient distance from the plate B to permit a five-tooth gear-wheel C to be journaled on said plate behind said counter-wheel, as shown in Figs. 3 and 4. Said gear-wheel, as shown, is supported on the frame-plate B by means of a bolt 0 provided with a flattened elongatedhead 0 at the center of which said gear-wheel is jouraled by means of a bolt 0 'Said gearwheel is held normally from rotation by the frictional engagement of a coiled spring 0 against the same and the plate B when actuated by the movement of the said counterwheel. A pin 0 (shown in dotted lines in Figs. 3 and 5) is secured on the inner side of said counter-wheel G in position to engage one of the teeth of said five-toothed gear C and move the same sufiiciently to actuate a smaller counter-wheel (1 when the counterwheel C has completed one revolution from 0O,or, in other words, counted one hundred. Said smaller countingwheel 0 is secured upon the frame-plate B by means of a bolt D, which extends through said plate and is provided on the rear side with a nut adapted to hold the same in position. Said bolt D is provided on the inner side of said plate with an enlarged head d, which, as shown in Fig. 13, is provided with a plurality of bosses (1 upon its face, which fit into cornplemental recesses on the inner side of said counting-wheel. An elongated hub 0, milled on its outer surface to afford manual engagement, is provided on said wheel, and extending axially through said hub and counting-wheel is a bolt 0 which has threaded engagement in the head d of said bolt D. Said counting-wheel on its rear side is shaped to afford a ten-toothed star-shaped gear, as shownin Fig. 14-, and on the front side of said wheel are indicated the digits from O to 9, inclusive, coinciding with the points of said gear, thus adapting said smaller wheel C to indicate the number of revolutions of the larger wheel, (each indicating 100.) The outer face of said smaller counting-wheel is in the same plane with the outer face of the larger wheel and the ten-toothed gear thereon is in position for its teeth or points to intermesh successively with the points of the fivetoothed wheel C, so that when the larger counting-wheel actuates said five-pointed gear said gear actuates the smaller counting-wheel by engaging with one of its teeth or arms -against one of the points thereof and turning the same the distance indicated by one of the teeth, or, in other words, one-tenth of a revolution, bringing the numeral indicating the revolution adjacent to and in alinement with the numerals indicating the count on the larger 'wheel, as shown in Fig. 5.

Means are provided for actuating the larger 'wheel to indicate or add successively the digits from 1 to 9, inclusive, comprising, as shown in Fig. 2, five keys each marked on its upper surface withthe numeral of digit l to 5, inclusive, indicating the number on the larger counter-wheel it is adapted to indicate or count. Pivotally engaged on the frame near the left side of the machine, as

shown in Fig. 4, is a baror lever E, upon which engages a leaf-spring e, acting to hold said bar normally at the downward limit of its movement. Said bar is provided with four notches on its under side equally spaced from the pivot of the lever and from each other, and extending beneath said lever and engaging each in one of said notches are the keybars e e e e, respectively, for the keys l to 4, inclusive, and which, as shown, are

pivoted centrally on said base-plate a of the machine to afford each of said key-bars the same amplitude of movement. Inasmuch as the distance from the ends of said key-bars at the point of engagement with said lever to the pivot therefor are proportionate it is obvious that actuation thereof by equal movements of said key-bars will proportionately vary the movement of the free end of said lever, or, in other words, the actuation of the key-bar 6* will necessarily elevate the free end of said lever four times as high as when actuated by the key-bar e, and in the same manner actuation bythe key-bar e and e respectively, will elevate the free end of said lever respectively three times and twice as high as when actuated by the key-bar 0. At the free end of said lever E is provided an upright frame F, of sheet metal, as shown, bent at its bottom to afford a foot-flange f to afford attachment with thebase and at its top and middle portion provided with inwardly-directed flanges notched on their ends to provide parallel tongues f f, adapted to receive between the same the slide-bar E. Said slide-bar E is provided with an aperture at its lower end to receive a suitable projection on the extremity of said lever E and on its upper end affords attachment for a leaf-spring E which is bent inwardly at its top to engage in the serrations or teeth of the large counting-wheel, as shown in Fig. 3, and possessessufiicient resiliency to permit the same to be sprung laterally as said wheel is revolved thereby, as shown in dotted lines in said figure, so that whensaid lever is actuated by either of said key-bars the lever E carries said slide-bar E and the spring E upwardly into engagement with the teeth, rotating the same to correspond with the numeral on the key actuated. Means are provided for limiting the rotation of the counting-wheel C to the exact distance necessitated by the throw of the free end of said lever E by the key. For this purpose each of said key-bars e to e, inclusive, is provided heneath the periphery of said wheel each with an upwardly-extending rod or bar '6' e 0 e respectively, rigidly secured thereto, with the upper ends thereof shaped to engage the teeth of said counting-wheel and adapted whenthe key is forced downwardly to its limit to be i brought into positive locking engagement with the teeth of said counting-wheel, thereby holding the same from movement greater than the count of the key caused by a more or less violent blow upon the key.

The 5 key, positioned at the extreme left of the keyboard to be engaged by the right thumb of the operator, is secured upon a key bar G, which extends inwardly to a point beneath the periphery of the large counter-wheel and in close relation with an up wardly-extending bracket or frame F, similar to the frame or bracket F on the right side of the machine and in like manner provided with a foot-flange f, which affords attachment with the base and at its top is provided with an inwardly-bent flange notched to provide tongues f, adapted to afford between the same aguide which registers with a corresponding guide formed in an inwardly-directed flange having tongues f near the center of said bracket, as shown in Fig. 8, and between which is engaged the slide-bar H. At the bottom of said slide-bar is a pin it, which, as shown, projects through a longitudinal slot in the end of said key-bar G, whereby said slide-bar isactuated. Secured on the upper end of said slide-bar is a leaf-spring H, corresponding with the leafspring E on the opposite side of the machine and which, as shown in Figs. 3 and 5, is provided at its upper end with an inwardly and downwardly inclined hook 72., adapted to engage the teeth in the counting-wheel and owing to the spring 7L2 pull downwardly when the key is released. Locking mechanism is provided which acts to hold said wheel from being actuated more than live notches or more than the sum of the count of said 5 key and any one of the other keys upon the keyboard. Said locking mechanism, as shown, comprises a bracket or plate I, rigidly secured on the inner face of the frame-plate B and projecting beneath the periphery of the large countingwheel and having pivotally secured thereon a horizontal trigger-plate '1 normally held by a spring 11 in position for the inner end thereof to engage the teeth of said counting-wheel, as shown in Fig. 10. The outer end of said trigger-plate extends past the slide-bar H and in close contact therewith, and said slide-bar is shaped on its edge which engages said trigger-plate to afford a cam-surface adapted as the slide-bar is moved upwardly to swing the inner end of the trigger bar or plate inwardly or rearwardly, thus releasing the periphery of the wheel therefrom, as shown in Figs. 3, 8, and 10. Thus when the key 5 is actuated or pressed downwardly the trigger-plate is swung out of engagement with the counting-wheel during the upward movement of the spring-hook H and is held out of engagement until the inner end of thekey-bar G has completed its descent, at which moment the spring again forces the trigger-plate into engagement with the periphery of the wheel. It is obviously important also to release the trigger-plate from the periphery of said wheel when the other keys are actuated; otherwise the wheel would be locked from movement. For this purpose a lever K is pivoted centrally on the frame-plate B and at one end slidably and pivotally engages the free end of the lever E and at its other end, as shown in Fig. 3, extends past the slide-bar H and is provided with a downwardly-directed end 7:1, the lower end of which is bent to afford an arm in, which extends between the bracket F and slide-bar H and is rigidly secured to and supports the lower end of a sliding tripbar K, which also bears with one edge against the rear edge of the trigger-plate, as shown in Fig. 9, and is provided with a notch in said ed ge. which permits said trigger-plate to swing inwardly into engagement with the periphery of said wheel when the key-bars are in their normal position. hen, however, one of said keys is actuated, the lever K is actuated thereby, immediately moving the slide-bar K downwardly, forcing the trigger 27 out of engagement with the wheel and permitting the same to rotate.

In the modified construction illustrated in Figs. 5 and '7 the lever K and slide-bar K are omitted, and in lieu thereof a trip-bar K, preferably of spring metal, is rigidly secured on said leverE between the locking-bar c and the pivot and projects upwardly at the rear of the periphery of said wheel and in position to engage a rearwardly-directed projection 71: on the trigger-plate 2' as shown in Fig. 7. lVhenso constructed, the upward movement of the free end of the lever moves the upper end of the arm K laterally into engagement with the projection 1:", thereby swinging the trigger-plate out of engagement with the counting-wheel, as shown in dotted lines in Fig. 7, immediately releasing the same when the lever E is permitted to return to its normal position. Means are also provided for releasing said trigger-plate from the periphery of the large counting-wheel to permit the same to be set back to the O or starting position, comprising a bar L, which extends downwardly through the top of the case and at its lower end is seated in said bracket I in close contact with the edge of the triggerplate, so that when said rod is pressed downwardly the end of said trigger-plateis thrown out of engagement with the counting-wheel. A push-button Z is provided at the outer end of said bar, and beneath the same and engaging onthe case is a spring Z, which normally supports the weight of said rod. In a similar manner a push-pin L is provided, extending through the case above the counting-wheel G in position for the inner end thereof to be engaged by a pin (1, set in the rear side of said counting-wheel, for engagement at a given point to prevent repetition of the count. Ordinarily said pin is so set as to engage said push-pin just before the 0 position is reached on said counting-wheel, so that the 10 wheelto be, again set :at;0 or to 'con--- tinue the countzfor anydesired number off thousands preferred.

Fitting closely on and secured to theframeplate-B, which 1 afliords the; back. therefor,-is. the-case -M, of'sheet metal, which afiordsas: closed casing: for the front :of ;the--m.echanismx and isprovided with a peripheral flange m,

aflordingthe top and side wallstherefor." Said .plate M is apertured to permit the milledhubs 0 0 of'the counting-wheelsto; project.

therethrough, as shown inEigsal and 2,. and is also providedwith ahorizontal slot. disposed in alinement with: azradius of' each of said counting-wheels and over adjacent points;

on the periphery of each and through which can be seen thenumbers indicated E for. each position of said wheels.

' The. operation is as follows: The. machin e;

constructed and adjusted as described may. be actuatedto count from onetofive byactuating the-respective keys, in whichevent either the. spring-blade Eior the: blade H'z,

which, as shown, engage on opposite sides-of the-wheel, causes the'large counting=wheel torotate, and, as before described, the extent of said rotationwill be, dependent upon. thekey. actuated and can in no instance, owing to the locking mechanismdescribed, exceed a movement correspondingv with the. number indi-.' cated upon the key actuated; Should, how-v ever,'.adigit greater than five be required, the 5' key and either of the other keys may be actuated simultaneously, each affording exactly the sameeffect as the-same keys-would produce-When actuated singly. For example, should. the key-95. and the-key 1: be actuated simultaneously, the upwardmove'ment of the lever E, actuated by key 1, moves the counting-wheel one notch .orone unit while the spring-plate H is moving upwardly into position to engage and pull thewheel around the five notchesor-digits, which .is the limitof its movement; In the same manner either the key. 2, 3,, 'or 4: maybe-ac.- tuated simultaneouslywith the key 5, said keys each producing their characteristicmovement in the countingrwheelbefore thehook it engages the. appropriate tooth to pull .the Wheel the number of units indicated upon'said 5 key. Thus any of thedigitsfrom 1 to 9, inclusive, may be produced either by: actuatingsingle keys or 'thekey, 5? simultaneously with any oneof the other keys uponthe keyboard, and in each instance the look: ing mechanism" acts to hold said counting.- wheel from movementother thanthat neces-. sarilyproduced and indicated by the numeral on .thekey or-keysactuated; In this manner a column of figures may bemechanicallyand very. rapidly added, the .counting-wheel hav:

ling, been ;first :adjusted, as; shown in Fig,- 2,-

with the-fOO position on both Wheels showing through the.observationaperture.= When:

thelarge counting-wheel-O has-been actuated to; complete oneentire revolution of .j the pin: 0?, which hasa :short time previously engaged :v one. of thearms or-teeth on the. five-toothed; gear.G forces saidzgear around until a: tooth thereon engages 'one of: the teeth on the-rear"- c'ountingrwheelonespace at the-exact momenti that.the.-, 00.? position on; the large:cou-nting:- wheel registers 'insaidv observatiomaperture;. thus the 1 count; on the 1 two wheels reading,-

side ofethei countingewh'eeliG actuatingsaid 100or.any numberof hundredsequal to the. count upto. one thousand. Obviously ad ditional counting wheels. may be: employed which inya similar: mannermay.registereach completerrevolutiouofthe counting-wheel G to. indicate-the number of thousands counted, and, ifpreferred, amounting-wheel may be substituted for. the wheel 0 having 'anydesired number of units upon-its periphery, each of saidzunits'representing 100 counted -by-.

the larger wheel. spective. counting-wheels. may be journaled in any desired or. suitable manner: upon the frame, and it. is .obviousthatrthe details for. the. lockingmechan-ism, .as Well as minor:details'ofithe. actuating mechanism, may be varied without departing from the principles of this invention.

I'.claimv as my invention.--

1. I'nan adding-machine, a counting-wheelhaving' a-uniformly notched periphery and havingv numbers in series arranged thereon, of a lever. pivoted adjacent the-periphery of saidwheel and asplurality of' key bars engag-- ing the first-named lever at points.- proportionalwdistancesapart, means carried on-said' lever ad apted to engage in thenotches insaid Wheeland Frotatethe same a. di'stancedependw entupon: the key-bar actuated and means on each key-bar adapted to engageand limit the. movement of said wheel.v

2.. Ina machine ofp-the classdescribed a rotative counter-wheel, peripheral teeth thereon,- a:,le-ver-pivoted at one end near the plane of said wheel, key-bars engaging said lever at distances from .its fulcrumdetermined by-a numeral .oneach and a 1 resilient arm pivoted on the free end-of the lever acting to engage and rotate the Wheel.

3.. In amachine of the class described a-rotative coun ter-Wheel, a' lever pivoted near the plane thereof, key-bars pivoted centrally and each appropriated to anumeral and engaging said lever ataa distance from thefulcrum determined by the numeral, a'resilient arm carried ion-the lever and Iactingto engagcand rotate thewheel and meanson said key-bars acting to limitthe movement ofsaidwheel.

4. In amachine. of the class described a rotative counter-Wheel, teeth on :the periphery numbered consecutively, a.lever:- pivoted; ads

Obviously, too, the rev jacent said wheel and near the plane thereof, a spring holding the same retracted from the wheel, an arm loosely engaged on the end of said lever and keys each indicatinga numeral and positively connected with said lever and acting to move said arm into engagement with said wheel and rotate the same a distance corresponding with the numeral on the key actuated.

5. In a machine of the class described a counting-wheel, teeth on the periphery thereof numbered consecutively, a lever pivoted adjacent to said wheel, pivoted key-bars each appropriated to a numeral and engaging said lever at graduated distances from its fulcrum, and an upwardly-extending rod on each key and limiting the movement of the wheel to the numeral on the key actuated.

6. In a machine of the class described a counting-wheel consecutively numbered, teeth on the periphery thereof, key-bars each appro priated to a numeral, means actuated thereby engaging said counter-wheel, the actuating means operated by one key acting on the op posite side of the wheel from the others and adapted to operate conjointly with any other key and guides adapted to hold said actuating means in position.

7. In a machine of the class described, a rotative counter-wheel, equally-spaced, consecutively-numbered teeth thereon, a plurality of keybars each appropriated to a numeral, means operated thereby adapted to rotate the wheel to correspond with the numeral of the key-bar actuated, one of said key-bars acting on the periphery of the wheel on the opposite side the center from the other, the key-actuated means on one side the Wheel acting to pull and on the other to push the wheel in making the count, adapting the single key to operate with any one of the oppositely-disposed keys in making the count, and locking means for each key preventing false count.

8. In acomputing-machinearotative counting-wheel having numbers consecutively arranged near its periphery, keys numbered from 1 to 1 inclusive, a pawl operated thereby acting to rotate said wheel to correspond with the number on the key operated,

a 5 key, a pawl operated thereby acting to rotate said wheel correspondingly and adapted to operate independently and with any one other key to rotate said wheel to correspond with the sum of the numbers on said keys a guide for each of said pawls and a close case provided with an aperture through which the number indicating the total count may be seen.

9. In a computing-machine a rotative consecutively-numbered counter-wheel, four keys appropriated to the digits 1 to 4: inclu sive, means operated by each acting to rotate said wheel to correspond with the digit of the key operated and an upwardly-extending arm on each key adapted to lock the wheel when the key has reached its downward limit.

10. In a computingmachine, a rotative counting-wheel having numbers consecutively arranged on its periphery, key-bars numbered from 1 to 4 inclusive, a spring-pawl operated thereby adapted to rotate said wheel a space corresponding to the key-bars operated, a 5 key, a pawl operated thereby adapted to engage the opposite side of the wheel, a trigger adapted to normally lock said wheel from rotation, means for releasing said trigger when the 5 key is operated and a lever actuated by the other keys adapted to operate said trigger.

11. In a computing-machine, the combination with a counting-wheel, a lever pivoted beneath the same, a pawl on the free end thereof adapted to operate said wheel, keys numbered from 1 to 4: inclusive adapted to operate said lever, a 5 key, a pawl thereon adapted to operate said wheel both independently and in conjunction with the aforesaid keys, a trigger operated by said 5 key, a lever slidably engaged with the free end of the key-operated lever and a trip-bar thereon adapted to release said wheel when the first-named keys are operated.

In testimony whereof I have hereunto subscribed my name in the presence of twosubscribing witnesses.

CHARLES IV. HORN. Vitnesses:

C. W. HILLS, ALFRED O. ODELL. 

